Alert archive / Montana / 1989
Weather alerts in Montana, May 1989
15 weather alerts in May 1989, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered any part of the state, so the counties below add up to more than the state.
Weather alerts by county
Each county as a circle sized by its count in May 1989. Tap one for its archive.
- Alerts
- 15
- Warnings
- 15
- Watches
- 0
- Advisories
- 0
- Busiest day
- May 10, 19896 alerts
Over time
By day
Days in UTC, the clock the archive keeps.
The alerts
Every alert, in the order issued. Times are local, Mountain Time. Each opens its own page with the text, the map, the radar and the sounding.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 9, 11:59 PM MDT | Severe Thunderstorm Warning | MSO | Missoula, Ravalli | 61 min |
| May 10, 12:03 PM MDT | Severe Thunderstorm Warning | MSO | Jefferson, Silver Bow | 57 min |
| May 10, 12:49 PM MDT | Severe Thunderstorm Warning | MSO | Jefferson, Lewis and Clark | 116 min |
| May 10, 1:43 PM MDT | Severe Thunderstorm Warning | TFX | Cascade | 62 min |
| May 10, 2:26 PM MDT | Severe Thunderstorm Warning | MSO | Missoula | 64 min |
| May 10, 5:22 PM MDT | Severe Thunderstorm Warning | TFX | Pondera, Teton | 68 min |
| May 10, 6:25 PM MDT | Severe Thunderstorm Warning | BYZ | Big Horn, Yellowstone | 65 min |
| May 11, 4:58 PM MDT | Severe Thunderstorm Warning | BYZ | Carbon, Stillwater | 62 min |
| May 11, 5:39 PM MDT | Severe Thunderstorm Warning | BYZ | Stillwater, Yellowstone | 66 min |
| May 11, 6:47 PM MDT | Severe Thunderstorm Warning | BYZ | Musselshell, Yellowstone | 58 min |
| May 11, 7:14 PM MDT | Severe Thunderstorm Warning | BYZ | Custer, Rosebud | 61 min |
| May 11, 7:49 PM MDT | Severe Thunderstorm Warning | BYZ | Treasure, Yellowstone | 56 min |
| May 11, 7:49 PM MDT | Severe Thunderstorm Warning | BYZ | Musselshell | 56 min |
| May 11, 8:13 PM MDT | Tornado Warning | BYZ | Custer | 62 min |
| May 11, 9:02 PM MDT | Tornado Warning | BYZ | Prairie | 58 min |
By product
Every kind of product issued here, grouped by hazard. Each opens the same place narrowed to that product.
| Product | Alerts |
|---|---|
| Severe storms | |
| Severe Thunderstorm Warning | 13 |
| Tornado Warning | 2 |
By county
Every county with at least one alert. A county page lists each alert that covered it.
Nearby
Alerts in force nowTornadoes on recordThe radar archive19881990
Sources
National Weather Service watches, warnings, advisories and statements from the Iowa Environmental Mesonet's VTEC archive, which reconstructs tornado, severe thunderstorm, flash flood and marine warnings back to 1986 from the NWS text archive. Storm Prediction Center watches and mesoscale discussions from SPC's archive through the Mesonet. County centers from the US Census Bureau. Warning verification from the Mesonet's Cow. Rebuilt daily.